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The half-life of Sn-110 is 4 hours. If you had 40 grams of this nuclide, how much would you have left 8 hours later?
a solution of ammonia and water contains 2.00times1025 water molecules and 5.30times1024 ammonia molecules. how many
A gas is compressed from an initial volume of 5.40 to a final volume of 1.20 by an external pressure of 1.00 . During the compression the gas releases 126 of heat.
A strong broad IR stretching band at about 3500 Cm-1 along with several narrow aromatic bands around 1600 and 1500 Cm-1 suggests the presence of what class compound?
at a particular temperature and a0 2.00 x 10-2 concentration versus time data were collected for this reaction and a
determine the heat released when (ethene) CH2 CH2 reacts with hydrogen gas and form CH3CH3.If Bond enthalpies given are H H : 436 kJ/mol,C Br : 276 kJ/mol,C C : 612 kJ/mol,C C : 348 kJ/mol,C H : 412 kJ/mol;
The elements silver, molybdenum, and sulfur combine to form Ag2MoS4. What is the maximum mass of Ag2MoS4 that can be obtained if 8.63 g of silver
Draw the major organic product of the reaction. Indicate the stereochemistry via wedge/dash bonds, including explicit H and D atoms
Calculate the mean percent of hydrogen peroxide when three determinations were 3.03% , 2.89% and 3.22%
calculate the amount of benzaldehyde (106.12 g/mol), benzophenone (182.22 g/mol), and methyl benzoate (136.15 g/mol) needed (they each get a whole 3.2 g bromobenzene)
when sodium bicarbonate or sodium hydrogen carbonate is heated above the temperature of 270 degrees celsius it
what is the rate that sulfur hexafluoride would effuse through a system that allows oxygen to effuse at 22.1mL/min
in certain cases calcium hydroxide and sulfuric acid react to produce calcium bisulfate and water. when 0.0720 mol
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